Trees whose trunks stand wholly upon the land of one owner belong exclusively to that owner although their roots grow into the land of another. Trees whose trunks stand partly on the land of two or more coterminous owners belong to them in common.
N.D. Cent. Code § 47-01-17
Tree occupying lands of adjacent owner - Ownership determined from trunk
Official source: North Dakota Legislative Branch. Reproduced from public-domain North Dakota statutes; confirm against the official source for the current text. Not legal advice.